Answer:
Step-by-step explanation:

C. three sides with the same length

You need to use the equation for adding fractions, which is

In this case, a=-1, b=3, c=-3, d=5.

simplify
answer:
Answer:
34
Step-by-step explanation:
180 since it is supplementary
then minus 100 which is 80 then minus 12 which is 68 then half that which is 34
the length is given and i got the width as 8 so you just add up all the sides and i got 40